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Write a balanced chemical equation between magnesium chloride and sodium phosphate. Determine the grams of magnesium chloride that are needed to produce 1.33 x 10e23 formula units of magnesium phosphate.
solution of an unknown acid has a ph=1.776. What is the value of acid dissociation constant?
in lab an isomerization of dimethyl maleate in the presence of bromine to form dimethyl fumarate was conducted using a
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
Starting with 0.86 moles of HF, calculate the number of moles of H2O that is produced by this balanced reaction.
How many grams of dry NH4Cl need to be added to 1.80 L of a 0.800 solution of ammonia, NH3, to prepare a buffer solution that has a Kb of 8.87? for ammonia is 1.8E-5.
A 375mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286mL and the pressure increases to 901 torr, explain what will be the new temperature of the gas (reported to three s..
re-establish equilibrium conditions as described: The pressure if the system is increased by decreasing the total volume. a) shift to the left b)shift to the right c) no change
Consider the following reaction. 2 HCl(aq) + Ba(OH)2(aq) BaCl2(aq) + 2 H2O(l) ΔH = -118 kJ Calculate the heat when 130.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.450 M Ba(OH)2.
What is the hydronium ion concentration in a solution resulting from mixing 173 mL of 0.100 M HCN and 73 mL of 0.100 M KOH at 25 degrees C? Ka for HCN=4.9x10^-10
if you mix 2.000 moles of so2 and 3.000 moles of cl2 in a one-liter flask so2cl2g w so2g cl2g and the keq 291 what is
Problem- The freezing point of a 0.01 m aqueous solution of a nonvolatile electrolyte is -0.072 deg. Celsius. What would you expect the boiling point of this same solution to be. (Kf = 1.86 degrees C, Kb = 0.512 C/m)
Suppose that 25 g of each of the following substances is initially at 28.0degrees C. What is the final temperature of each of the following substances upon absorbing 2.35 kJ of heat.
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